[Zope] - strftime for DateTime

[skip@calendar.com (Skip Montanaro)]

The appended context diff seems to do what Jim asked for.  Here's a simple
session:

    >>> import DateTime, time
    >>> dt = DateTime.DateTime(time.time())
    >>> dt.strftime("%Y-%m-%d")
    '1999-01-07'
    >>> getattr(dt, "%Y-%m-%d")
    <DateTime.DateTime.strftimeFormatter instance at 8116570>
    >>> getattr(dt, "%Y-%m-%d")()
    '1999-01-07'

(Jim actually did all the work.  I made sure the necessary time functions
were available at the module level and generated a context diff... :-)

Skip Montanaro	   | Mojam: "Uniting the World of Music" http://www.mojam.com/
skip@calendar.com  | Musi-Cal: http://concerts.calendar.com/
518-372-5583

*** /tmp/DateTime.py.~1~	Wed Jan  6 20:00:11 1999
--- /tmp/DateTime.py	Wed Jan  6 20:00:11 1999
***************
*** 101,107 ****
  
  import sys,os,regex,DateTimeZone
  from string import strip,split,upper,lower,atoi,atof,find,join
! from time import time,gmtime,localtime,asctime,tzname
  from types import InstanceType,IntType,FloatType,StringType
  
  
--- 101,107 ----
  
  import sys,os,regex,DateTimeZone
  from string import strip,split,upper,lower,atoi,atof,find,join
! from time import time,gmtime,localtime,asctime,tzname,strftime,mktime
  from types import InstanceType,IntType,FloatType,StringType
  
  
***************
*** 854,859 ****
--- 854,862 ----
      def _validTime(self,h,m,s):
          return h>=0 and h<=23 and m>=0 and m<=59 and s>=0 and s<=59
  
+     def __getattr__(self, name):
+         if '%' in name: return strftimeFormatter(self, name)
+         raise AttributeError, name
  
  
      # Conversion and comparison methods
***************
*** 1117,1122 ****
--- 1120,1127 ----
          """Return the second"""
          return self._second
  
+     def strftime(self, format):
+         return strftime(format, gmtime(self.timeTime()))
  
  
      # General formats from previous DateTime
***************
*** 1294,1299 ****
--- 1299,1312 ----
          """Convert to floating-point number of days since Jan. 1, 1901 (gmt)"""
          return float(self._d)
  
+ 
+ class strftimeFormatter:
+ 
+     def __init__(self, dt, format):
+         self._dt=dt
+         self._f=format
+ 
+     def __call__(self): return self._dt.strftime(self._f)
  
  
  # Module methods